... steel, copper, carbon steel (according to customer's requirement)Surface treatmentHot galvanized, polishing, chrome/zinc/nickel ... ,threading, welding, tapping, riveting, grindingSizeAccording to customer's desingThickiness0.5mm ~12mm, or other special availableStandardANSI. API ... parts, hydraulic fittingPackingAccording to customer's requirementsCertificateISO 9001 OEM/ODM aluminium stamping parts